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Finding the Fourth Proportional to 225,246.70, 310,909.62 and 129,816.94

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Solution

The fourth proportional to 225,246.70, 310,909.62 and 129,816.94 is: 179,187.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,246.70 : 310,909.62 = 129,816.94 : x
  2. Step 2: Convert to fraction form
    225,246.70/310,909.62 = 129,816.94/x
  3. Step 3: Cross multiply
    225,246.70x = 310,909.62 × 129,816.94
  4. Step 4: Simplify right side
    225,246.70x = 40,361,335,484.96
  5. Step 5: Solve for x
    x = 40,361,335,484.96/225,246.70
  6. Step 6: Final answer
    x = 179,187.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.